10.10 on MBA 2011, all-white login screen

Since installing Yosemite on my 2011 MBA, I occasionally will get an all-white login screen, I can see my login-icon but nothing else: I cannot see the password-entry field. This happens with the built-in screen as well as external screens. Appears to be intermittent. My desktop background is set to rotate once per day. Perhaps that is what's causing it?

I'm having what seems to be the same issue on both an MBA and a Pro. In both cases I have background switching enabled, but every 30 min or so. I mostly see this with the "locked screen" when the screen locks after a period of inactivity, I don't think I've seen this on a fresh boot login screen yet.
In all cases I have been able to type my password in blindly and get back into the system...

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After FileVault I get a white login screen

Hi
After i enabled FileVault 2, I get a white login screen instead of a normal login screen.
Is it possible to change it back to normal?
thx!

That's completely normal and it's not possible to change it. That's because your Mac asks you for your login password before loading OS X because the whole hard drive is encrypted

Ichat screen all white when screen sharing

My boss and I use this nearly everyday...
Today all he can see is WHITE
Anything to do with Mountain Lion?
What do we do?

Hi,
Strangely I am not seeing an update being offered.
Having been with iChat since version 2 (the so called iChatAV) I have seen some very odd things at times particularly at Upgrade time when new versions are about.
I don't use Safari every day but mine is at Version 6 The App Store is still saying no update. (Actually I can't see Safari as an App that is listed).
Speed on connections change all the time
People get upgrades because they pay for them. Others get them as the service gets updated anyway.
I am not aware yet that the Mountain Lion Screen Sharing takes any less or more speed that the iChat versions did (Around 128kbps min)
I would open th Connection Doctor during a Video chat (From the Video menu) and then convert it to a Screen Share and see what speeds and Frame rates are shown
Screen Sharing is regarded as a Audio Chat+, the Plus bit being the VNC connection that does the desktop feed.
11:14 PM Tuesday; July 31, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
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Getting all white screen after login

I log into my MacBook Pro & am getting an all white/grey screen, no transition to home screen. Any idea as to what the issue is?

Monkeyknfefight,
it might be a filesystem problem. Which model MacBook Pro do you have, and which version of OS X is installed on it?

My ipod went all white. Icant turn it on or off. It just stays white

I was playing a game on my ipod when it went all white. the screen wont turn off. it just stays white. what do i do now?

Try a Reset...
Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.
If no joy... Try a Restore...
1: Connect the device to your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
3: If the device doesn't appear in iTunes, try using the steps in this article to force the device into recovery mode.

Reverts back to dark gray login screen and will not allow me to login

HI!
SPECS
Retina 15in.
16gb of memory
500 gb ssd.
OS - Mavericks
PROBLEM
I can boot up and login to my laptop - no problem. I have my login set up so that my user name appears and all I have to do is type my password.
The problem is when I try to wake my computer or disconnect it from my thunderbolt display. Sometimes, (more frequently as of late) when I wake my computer or disconnect it from my thunderbolt display my computer will revert back to a dark gray login screen and prompt me to put in my user name and password (First of all the login screen that comes up is different than the one that comes up when i boot up the laptop because it requests me to type in my user name). - once I type in my user name and password it will not let me log in. It will clear both the username and password fields and sit at this screen. At this point I am forced to restart my laptop and log back in. I never have any problems restarting and loging in right after booting up.
Any suggestions on how I can fix this? I do not think it is normal for it to just revert to the login screen and then not even accept my login information.
Thank you in advance for all and any help!

First try a Reset ( No Data will be Lost )
Press and hold the Sleep/Wake button and the Home button at the same time for at least Ten seconds... (But can take Longer)... until the Apple logo appears. Release the Buttons
If no joy... Try a Restore...
1: Connect the device to Your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
Restoring > http://support.apple.com/kb/HT1414
3: If the device doesn't appear in iTunes, try using the Steps in this article to force the device into Recovery Mode.

Screen is all white after display wakes up. Why?

I have a mid 2011 iMac and recently noticed a new issue. After the computer wakes up from sleep, the screen is entirely white. If I click on an area or open an app, the program opens and an are around the window restores part of the background. This has been happening for maybe a month or so. Any ideas why?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, or by a peripheral device.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
*Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode. Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

MacBook Pro (late 2011) stuck at white Apple screen.

Hi all. My MacBook Pro 13 inch (late 2011) is giving me the same problem over and over again.
Few months ago, I had sent it to Apple for repair due to faulty HDD. Now the same problem happened again. The MacBook will stuck at the white Apple screen with the circle turning when attempting to switch on.
However, Apple had just replace a new HDD and why it's still happening again?
Can anybody here please assist to advice me what is making my Mac unable to start up, stuck at the white Apple screen, even after replacing a new HDD?
Thank you!

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is damaged and the drive is probably malfunctioning. In that case, go to step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 6
Boot into Recovery again. When the OS X Utilities screen appears, follow the prompts to reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Note: You need an always-on Ethernet or Wi-Fi connection to the Internet to use Recovery. It won’t work with USB or PPPoE modems, or with proxy servers, or with networks that require a certificate for authentication.
Step 7
Repeat step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a backup.
Step 8
A dead logic-board battery in a Mac Pro can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested.

I have OSX 10.5.7 on my Intel Mac. When I try to login using the correct password the screen goes white and just returns back to the login screen. It does not jiggle like when you enter the wrong password.

I have had a number of issues with my Intel Mac recently and had to reboot using disk utilities, safe mode, OSX recovery, but always come back to the login screen but when I type my password the screen goes white and returns to the login screen. My password is correct and the login does not jiggle as it would if the password was wrong. Please advise,

Back up all data if you haven’t already done so. There are ways to back up, even if you can’t log in. Before proceeding,you must be sure you can restore everything to the state it’s in now. If you’re not sure you can do that, STOP.
The procedure below may spare you the need for a clean reinstallation of OS X. If you don't feel comfortable carrying it out, don't. try.
Briefly, you need to delete the following file:
/var/audit/current
If you already know how to do that, you can skip the rest of this message. Do it, and try again to log in.
Boot in single-user mode by holding down the key combination command-S at the startup chime. If you’re using an external USB keyboard, it must be plugged directly into a built-in port on the Mac, not into a hub. Release the keys when you see a black screen with scrolling white text. In this mode, there’s no graphical interface; just a command line. Initially, you can’t make any changes to files.
When the text stops scrolling, and you see a line ending in a pound sign (“#”), type the following command:
mount -uw /
You must type the command exactly as given, with no mistakes. If you don’t feel able to do that, STOP. At this stage, no harm will be done if you make a mistake, but later, it will be. Press the return key.
Next, type the following command:
rm -i /var/audit/current
Press return. You should get the following output:
remove /var/audit/current?
If that's not what you get, STOP. Type the single letter N, press return, and try again. Otherwise, type the single letter Y and pressreturn.
Finally, enter the command:
exit
Press return. The text will start scrolling again, and then the system will reboot. Try again to log in.
Credit for this solution to ASC user AnthonyTW.

My MacBook Pro will turn on and get to the login screen. After I login though it goes to a white screen.

My MacBook Pro will turn on and get to the login screen. After I login though it goes to a white screen.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

When i open my computer I get the white screen with apple symbol and there are vertical lines all over the screen with green pixels and after a few minutes the screen gets grey and I get message to restart my computer what happens

3 years ago I bought an IMac Desktop that I am using for a lot of things but the most important for dvd montage in Imovies and Idvd.
Now today when I opened my computer I get as usual the white screen with the Apple symbol but there were all over the screen vertical lines with green pixels and after a while the screen gets grey and I get message to restart my computer using the power button or the restart button and when I do so each time the same is happening somebody can tell me what is happening and what caused this. This computer is my work and now I have no income anymore.
On the Apple support site they are asking to enter the serial number and when I do so I get message it is wrong but it is the only one I have and I buy this computer in Cairo Egypt. I am living in Hurghada in Egypt for the moment. When I call the technical support of the shop where I buy it they are telling me that it is the hard disk or ram and that I probably lost everything on it and they are asking a big amount to repair.
Can somebody advise me on this matter. Thanks in advance

You can find the serial number either in About this Mc in the Menu bar under the , or it should be on a sticker under the foot of the machine.
If you have the install discs, try booting from them, holding down the c key and then using Disk Utility to check the drive.
You can also boot into Safe mode
To start up into Safe Mode (to "Safe Boot"), do this:
   1. Be sure the computer is shut down.
   2. Press the power button.
   3. Immediately after you hear the startup tone, press and hold the Shift key.
      Tip: The Shift key should be held as soon as possible after the startup tone but not before.
   4. Release the Shift key when you see the gray Apple and progress indicator (looks like a spinning gear).
During the startup in Mac OS X 10.2 through 10.3.9, you will see "Safe Boot" on the Mac OS X startup screen.
During the startup in Mac OS X 10.4 or later, you will see "Safe Boot" on the login window, which appears even if you normally log in automatically.
Please post back with results,
To leave Safe Mode in any version of Mac OS X, restart the computer normally, without holding any keys during startup.

Su command won't work in MBA 2011 Lion 10.7.1

Hi All,
I have an iMac, 3 MBPs running Lion and Snow Leopard. In all of them, su command works just fine and of course I had no issues with them for many years.
I just bought a MBA 2011 and it came with Lion 10.7 which I updated to 10.7.1. The su command just simply refuses to work. It display 'su: sorry' as if I typed the wrong password.
1) I tried my own account password which is an administrator. Didn't work
2) Enable root account and set the password. Didn't work (I checked in my all other machine, don't need to enable root as the 'enable root' is still avaialable where as if it has been enabled only 'disable root' option will be displayed
3) Created another account (admin) also didn't work.
What did I miss here?

On the logs:
2:36:25 AM su: BAD SU (username) to root on /dev/ttys000
Just reformat my system and restore with fresh un-updated stock Lion, still the same issue.

Why is my screen all white after installing OS X Yosemite? No place to log on to my computer, only. White screen??

I Installed OS X Yosemite on my IMac and once it restarted I only had a white screen, no place for me to log on. I called Apple Support & they told me to rest all it again, I still have only a white screen with no box to enter my passcode,

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

Can i leave my power adaptor plug in to mba 2011 after fully charging it?

Hi all,
I was wondering whether i can leave my power adaptor plug in to my mba 2011 even after its gully charged?
Appreciate all feedbacks!

Yep! No problem with that. I would cycle the battery once a month or so (lt the battery completely drain then fully re-charge).
I love my 11" MacBook Air!

Why does Grab give me an all-white result?

After rebooting, Grab works fine, but within a couple of hours it starts giving me an all-white result. It grabs the proper size image, but the image is entirely white. This is true whether I grab a selection, a window, timed, untimed, all variations on grabbing are entirely white.
No messages appear in the console indicating anything is wrong. Quitting Grab and relaunching it doesn't help. Rebooting the computer fixes the problem temporarily.
Mac Pro with OS X 10.6.8, Grab version 1.5 (101), all software updates applied, all permissions repaired.

I think you are absolutely correct about Trusteer. My bank uses it too, although I use Firefox rather than Safari.
I tried this experiment:
* I tested Grab, it was working fine.
* Logged in to my online banking, Grab now fails, gives me all white.
* Logged out, Grab still is all white.
* Closed the Firefox tab in which I had the the online banking, Grab now works fine!
Just to be sure, I repeated the above sequence again, got the same results.
Further testing suggests that all I have to do to break Grab is to have a tab open in which Trusteer is active, it doesn't matter whether I've logged in yet, simply being at a Trusteer-protected login screen breaks Grab.
Looks like problem solved, thanks!

10.10 on MBA 2011, all-white login screen

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